are we talking < 8mm bezel on the side? That's the type of thin I'm looking at. My current Samsung E2320 has 19mm bezel, which is 38mm gap between screens, it looks sort of thin, but isn't once you put a 2nd monitor next to it.

No, you angle the side monitors behind your main monitor. That way you only see the bezel of your main monitor and not of the side ones.